| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyester film having high adhesiveness between a polyester film substrate and a coating layer and a method for producing the polyester film, and to provide a solar cell back sheet having high adhesiveness between a polyester film substrate and a coating layer. <P>SOLUTION: The method for producing a polyester film includes steps of: making a polyester film substrate having a terminal carboxylic acid group content (AV) of 3-20 eq/ton using a polyester resin whose temperature distribution prior to a crystal melting peak (Tm') is 1-10 °C; providing a coating layer on at least one surface of the polyester film substrate; and at least once stretching the polyester film substrate having a coating layer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
